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Central air conditioning system optimizing method and system based on mathematic model

A technology of central air conditioning system and mathematical model, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as waste of electric energy, inability to optimize the operating parameters of central air conditioning system, etc., and achieve the effect of saving electric energy

Inactive Publication Date: 2015-06-17
GUANGDONG URBAN & RURAL PLANNING & DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a mathematical model-based optimization method for the central air-conditioning system, which solves the problem that the operating parameters of the central air-conditioning system cannot be optimized in the prior art, thereby causing waste of electric energy

Method used

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  • Central air conditioning system optimizing method and system based on mathematic model
  • Central air conditioning system optimizing method and system based on mathematic model
  • Central air conditioning system optimizing method and system based on mathematic model

Examples

Experimental program
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Embodiment 1

[0020] A mathematical model-based optimization method for central air-conditioning systems, such as figure 1 shown, including the following steps:

[0021] S101: Based on the established energy consumption mathematical model, change the value of the main variable within the constraints, so that the total energy consumption of the system reaches the minimum value. At this time, the value of the system parameter is the value of the optimal working condition;

[0022] S102: Adjust the main variable to the optimal working condition value.

[0023] Among them, the mathematical model of energy consumption includes a mathematical model of the total energy consumption of the system and a mathematical model of each molecular system that constitutes the total energy consumption of the system. These mathematical models contain multiple variables, and the main variables refer to the variables that need to be mainly considered in the operational variables, and these variables are preset b...

Embodiment 2

[0025] As an improvement of Example 1, such as figure 2 shown. Since the total energy consumption of the central air-conditioning system is mainly produced by chillers, water pumps, cooling towers and fan exhaust pipes, the mathematical model constructed includes the energy consumption model of chillers 10, the energy consumption model of water pumps 20, the energy consumption model of cooling towers 30 and Fan coil energy consumption model 40, and determine the main variable that affects the above mathematical model: cooling water outlet temperature , Cooling water inlet temperature , chilled water flow , The air volume of the fan coil unit under operating conditions and air mass flow , the energy consumption calculated by the above chiller energy consumption model 10, water pump energy consumption model 20, cooling tower energy consumption model 30 and fan coil unit energy consumption model 40 is the total energy consumption of the system.

[0026] Among them, the...

Embodiment 3

[0047] Such as Figure 5 As shown, it specifically includes the following steps:

[0048] S201: Analyze the mathematical model of energy consumption, and automatically identify the mathematical structure and properties of the mathematical model of energy consumption;

[0049] S202: According to the determined mathematical structure and properties, select a solution algorithm corresponding to the mathematical model of energy consumption;

[0050] S203: Change the value of the main variable within the constraints, and make the total energy consumption of the system reach the minimum value according to the solution algorithm;

[0051] S204: Adjust the main variable to the optimal working condition value.

[0052] During the calculation, a series of preprocessing is required for the mathematical model, mainly including: 1. Direct processing of equality constraints, the variable values ​​that can be directly determined are regarded as constants, and such processing will minimize ...

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Abstract

A central air conditioning system optimizing method based on a mathematic model includes the following steps of changing values of main variables within constraints on the basis of the established energy consumption mathematic model so that the total energy consumption of a system can reach the minimum, wherein at the moment, the parameter value of the system is the optimal working condition value; adjusting the main variables to the optimal working condition value. Meanwhile, the invention provides the central air conditioning system optimizing system based on the mathematic model. The system comprises a processing module and a dispatching module. The processing module changes the values of the main variables in the constraints on the basis of the established energy consumption mathematic model so that the total energy consumption of the system can reach the minimum, and at the moment, the parameter value of the system is the optimal working condition value. The dispatching module is used for adjusting the main variables to the optimal working condition value. By means of the method and system, running parameters of a central air conditioning system can be optimized, the central air conditioning system runs under the optimal working condition, and electric energy is saved.

Description

technical field [0001] The present application relates to the technical field of air conditioning, in particular to a method and system for optimizing a central air conditioning system based on a mathematical model. Background technique [0002] With the advancement of science and the development of society, people's requirements for quality of life are getting higher and higher, and the requirements for production technology in all walks of life are also gradually improving. Central air-conditioning can improve and improve people's living and health standards, and improve production workshops High temperature and humidity have become one of the conditions that modern buildings must have. [0003] In the construction of the central air-conditioning system, only the design conditions are considered at present. However, only 25% of the operating time of the central air-conditioning system is in the design condition, and most of the time in the whole year is operated under part...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F2110/10F24F11/30F24F11/62F24F11/63F24F2110/00F24F2110/20F24F2140/20
Inventor 黄艳山马俊丽
Owner GUANGDONG URBAN & RURAL PLANNING & DESIGN INST
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